* {
  margin: 0;
  padding: 0;
}

html,body {
  width: 100%;
  height: 100%;
}
#root {
  width: 100%;
  height: 100%;
}
.appwrap {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.connect {
  flex: 1;
  overflow-y: auto;
}
.footer {
  display: flex;
  justify-content: space-around;
}
.active {
  color: red;
}
.addresswrap {
  border-bottom: 1px solid red;
}

.box {
  /* 快捷键alt + z ,将px转成rem，来回切，就可以在px和rem之间来回转换*/
  width: 1rem; 
  height: 6.25rem;
}